Head stabilizing support



FIG. 1 is a perspective view of the head stabilizing support of my design shown secured to a support surface illustrated in broken lines;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines in FIG. 1 are included for the purpose of illustrating environment subject matter that forms no part of the claimed design. 

The ornamental design for a head stabilizing support, as shown and described. 